5-Hour Energy Shots Linked to 13 Deaths

So far, 5-Hour Energy maker Living Essentials LLC has received 92 reports from people who fell ill after using the product. Since the product is sold as a nutritional supplement, the company is required to relay such reports to the FDA.

The reports themselves do not prove that 5-Hour Energy had anything to do with any of the deaths or illnesses.

"It is important to note that, while those who voluntarily report an illness or injury … typically identify the product that they assume caused the injury or illness, FDA as a scientific public health agency must carefully investigate and evaluate all possible causes before deciding whether the product actually caused the medical problem," the FDA said in a statement.

5-Hour Energy shots are small caffeinated drinks. The product does not contain any herbal stimulants.

Even if 5-Hour Energy shots did cause the injuries, it would be taken off the market only if the injuries resulted from proper use of the product as stated on its label.

In a statement, Living Essentials says it takes these injury reports "very seriously." The company says 5-Hour Energy is safe when used as directed by "hardworking adults who need an extra boost of energy."

The 5-Hour Energy label and the product's web site spell out proper use:

Drink no more than two bottles of 5-Hour Energy a day, spaced several hours apart.

People trying 5-Hour Energy for the first time should try half a bottle and wait 10 minutes before drinking the rest.

People sensitive to caffeine should talk to their doctor before using it.

Throw out any unused product within 72 hours of opening the bottle.

The FDA offers additional advice. In its statement, the agency warns that: